بررسی تنوع ژنتیکی نخودهای زراعی تیپ کابلی (Cicer arietinum L.) بر پایۀ صفات ریخت‌شناسی با استفاده از روش‌های آماری چندمتغیره

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناس پژوهش‌های کاربردی، مرکز تحقیقات حفاظت خاک و آب در اراضی دیم دانشگاه تهران (مرکزکوهین)

2 استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

3 استادیار، دانشکده کشاورزی، دانشگاه زنجان

4 استادیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

چکیده

در این پژوهش رابطه‌های چند متغیّره  بین ویژگی‌های ریخت‌شناختی (مورفولوژیک) 64 نژادگان (ژنوتیپ) نخود کابلی در  دو محیط تنش خشکی و بدون تنش در قالب طرح لاتیس ساده 8×8 در مزرعۀ تحقیقاتی دیم کوهین، دانشگاه تهران در سال 1393 بررسی شد. در محیط بدون تنش نژادگان‌های کرج-3628 و کرج- 3655 به ترتیب با عملکرد دانه 947/1387 و 074/352  و در محیط تنش نژادگان‌های کرج- 3628 و کرج-3645 به ترتیب با عملکرد دانه 698 و 5/694 کیلوگرم در هکتار رتبه‎های برتر بودند. عملکرد دانه در شرایط بدون تنش با وزن غلاف، عملکرد زیست‌توده، شمار غلاف، چگالی طولی، شمار دانه، قطر ریشه، ارتفاع بوته، شمار شاخۀ فرعی، وزن خشک شاخه‌ها، شمار غلاف پوک، شاخص برداشت، شمار شاخۀ اصلی و وزن دانۀ دوقلو و در شرایط تنش با صفات وزن غلاف، شمار غلاف، عملکرد زیست‌توده، شمار دانه، چگالی طولی، شاخص برداشت، قطر ریشه، ارتفاع بوته و درصد رسیدگی همبستگی مثبت و معنی‌دار داشت. نتایج تجزیۀ رگرسیون گام‌به‌گام در شرایط بدون تنش هشت صفت در هشت مرحله و در شرایط تنش سه صفت در سه مرحله وارد مدل کرده که صفت وزن غلاف نخستین صفت در مدل در هر دو شرایط بود. بر پایۀ نتایج تجزیۀ علیّت، در محیط بدون تنش عملکرد زیست‌توده و شمار غلاف بیشترین اثر مستقیم بر عملکرد دانه را داشتند. در تحلیل عاملی در شرایط بدون تنش و تنش به ترتیب با توجیه 66/85 و 25/86 درصد از کل تغییرپذیری‌ها چهار عامل شناسایی شدند. در تجزیۀ خوشه‌ای شمار 64 نژادگان در پنج گروه قرار گرفتند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Study of genetic variation of Kabuli chickpea genotypes (Cicer arietinum L.) using morphological traits with statistical multivariate analysis

نویسندگان [English]

  • Khodabakhsh Goodarzvand chegini 1
  • Mohammad Reza Bihamta 2
  • Reza Fotovat 3
  • Mansour Omidi 2
  • Ali Akbar Shahnejat Bushehri 4
1 Applied Research Expert, Soil and Water Conservation Research Center at University of Tehran (Kuhin Dry Lands), Iran
2 Professor, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
3 Assistant Professor, Faculty of Agriculture, University of Zanjan, Iran
4 Assistant Professor, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
چکیده [English]

In this study relationships between morphological characteristics of 64 chickpea genotypes under non- stress and stress conditions was evaluated in 8*8 simple lattice designs on the Research Field of Koohin,Tehran University). The Karaj3628 and Karaj3655 genotypes respectively with 1387.947 and 1352.074 Kg/hac under Non-stress and Karaj3628 and Karaj3645 genotypes with 698 and 694.5 Kg/hac respectively under stress conditions had the highest seed yields. There were significant positive correlation between SY* with PW, BY, NP, LD, NS, RD, PH, NSB, DBW, EPN, HI, NPB and DSW  in non- stress condition and there were significant positive correlation between SY with PW, PN, NS, LD, HI, RD, PH and MP in stress condition. Stepwise regression results showed that 8 independent variables entered into models in non-stress condition and 3 independent variables entered into models in stress condition, so that PW was first in both of them. Path coefficient analysis revealed that BY and NP had the highest positive direct effect on seed yield under non-stress condition. Factor analysis explained 85.66 % in non stress and 86.25 % total of variation in stress conditions with four factors. In cluster analysis 64 genotypes clustered in five groups.
 
List of abbreviations:
* SY: seed yield; PH: plant high; BY: biological yield; RD: root diameter’s; PN: number of pods per plant; PW: pod weight; NS: number of seeds per plant; SW: seed weight; NPB: Number of primary branches; NSB: Number of secondary branches; DSPP: double seed per plant; DSW: double seed weight; LD: length density; DBW: dry branches weight; HI: harvest index and; EPN: empty pod number per plant; HSW: 100 seeds weight; IP: immaturity percent; MP: maturity percent.

کلیدواژه‌ها [English]

  • Correlation analysis
  • Cluster Analysis
  • factor analysis
  • mean comparison of seed yield
  • Path analysis
  • Stepwise regression

مراجع

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فایل ها

سابقه مقاله

  • تاریخ دریافت: 01 اسفند 1394
  • تاریخ بازنگری: 27 خرداد 1395
  • تاریخ پذیرش: 12 مرداد 1395
  • تاریخ انتشار: 01 شهریور 1396

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